Assistant Professor   Assistant Professor (non-tenured)

2007.8 - 2012.3

Research Assistant   助手

2002.8 - 2007.3

日本学術振興会   日本学術振興会特別研究員   特別研究員(PD)

1999.4 - 2002.3

Special researcher of the Japan Society for the Promotion of Science

1999.4 - 2002.3

Special researcher of the Japan Society for the Promotion of Science

1996.4 - 1999.3

日本学術振興会   日本学術振興会特別研究員   特別研究員(DC1)

1996.4 - 1999.3

日本物理学会   J. Phys. Soc. Jpn. 編集委員  

2015.4 - 2016.3   

日本物理学会   領域8運営委員  

2013.4 - 2014.3   

Giant Peltier conductivity in an uncompensated semimetal Ta2PdSe6 Reviewed International journal

Akitoshi Nakano, Urara Maruoka, Hiroki Taniguchi, Ai Yamakage, Yukio Yasui, and Ichiro Terasaki

Journal of Physics: Energy   3   044004   2021.9

Ultralow-energy magnon anomaly in yttrium iron garnet Reviewed International journal

Shin-ichi Shamoto, Yukio Yasui, Masato Matsuura, Mitsuhiro Akatsu, Yoshiaki Kobayashi, Yuichi Nemoto, and Jun’ichi Ieda

Physical Review Research   2   033235   2020.8

High-temperature Short-range order in Mn<SUB>3</SUB>RhSi Reviewed International journal

Hiroki Yamauchi, Dita Puspita Sari, Isao Watanabe, Yukio Yasui, Lieh-Jeng Chang, Keietsu Kondo, Takashi U. Ito, Motoyuki Ishikado, Masato Hagihara, Matthias D. Frontzek, Songxue Chi, Jaime A. Fernandez-Baca, James Lord, Adam Berlie, Chris Goodway, Atsuhiro Kotani, Shigeo Mori, and Shin-ichi Shamoto

Communications Materials   1   43   2020.7

Magnetoelectric coupling without long-range magnetic order in the spin-1/2 multiferroic Rb2Cu2Mo3O12 Reviewed International journal

N. Reynolds, A. Mannig, H. Luetkens, C. Baines, T. Goko, R. Scheuermann, L. Keller, M. Bartkowiak, A. Fujimura, Y. Yasui, Ch. Niedermayer, and J. S. White

Phys. Rev. B.   99   214443   2019.6

Enhanced thermopower via spin-state modification Reviewed International journal

Hidefumi Takahashi, Shintaro Ishiwata, Ryuji Okazaki, Yukio Yasui, and Ichiro Terasaki

Phys. Rev. B   98   024405   2018.7

Magneto-thermopower in a weak-ferromagnetic oxide CaRu0.8Sc0.2O3: An experimental test for the Kelvin formula in a magnetic material: Reviewed

Takafumi D. Yamamoto, Hiroki Taniguchi, Yukio Yasui, Satoshi Iguchi, Takahiko Sasaki, and Ichiro Terasaki

J. Phys. Soc. Jpn.   86 ( 10 )   104707-(1-4)   2017.10

Anomalous Thermoelectric Response in an Orbital-Ordered Oxide Near and Far from Equilibrium Reviewed

Yasuo Nishina, Ryuji Okazaki, Yukio Yasui, Fumihiko Nakamura, and Ichiro Terasaki

J. Phys. Soc. Jpn.   86 ( 9 )   093707-(1-4).   2017.9

Spin state of Co3+ in LaCo1-xRhxO3 studied using X-ray absorption spectroscopy Reviewed

Takaaki Sudayama, Hironori Nakao, Yuichi Yamasaki, Youichi Murakami, Shinichiro Asai, Ryuji Okazaki, Yukio Yasui, and Ichiro Terasaki

J. Phys. Soc. Jpn.   86 ( 9 )   094701-(1-7)   2017.9

Magnetoelectric coupling in the pyrochlore ruthenate Gd2Ru2O7 Reviewed

Takuma Okamura, Ryuji Okazaki, Hiroki Taniguchi, Ichiro Terasaki, and Yukio Yasui

J. Phys. Soc. Jpn.   86 ( 8 )   084708-(1-4)   2017.8

Optical evidence for the spin-state disorder in LaCo1-xRhxO3 Reviewed International journal

Ichiro Terasaki, Shinichiro Asai, Hiroki Taniguchi, Ryuji Okazaki, Yukio Yasui, Yuka Ikemoto and Taro Moriwaki

J. Phys.: Condens. Matter   29 ( 23 )   235802-(1-7)   2017.5

Atomic structure study of the pyrochlore Yb2Ti2O7 and its relationship with low-temperature magnetic order Reviewed

Ali Mostaed, Geetha Balakrishnan, Martin Richard Lees, Yukio Yasui, Lieh-Jeng Chang, Richard Beanland

PHYSICAL REVIEW B   95 ( 9 )   094431-(1-9)   2017.3

Comparison With Ground States of Frustrated Quantum Spin Chain Systems A(2)Cu(2)Mo(3)O(12) (A = Rb and Cs) Reviewed

Akio Fujimura, Yukio Yasui, Yudai Yanagisawa, Ichiro Terasaki, Yohei Kono, Shunichiro Kittaka, Toshiro Sakakibara

IEEE TRANSACTIONS ON MAGNETICS   52 ( 7 )   1100503-(1-3)   2016.7

Ferromagnetic ordered phase of quantum spin ice system Yb2Ti2O7 under [001] magnetic field Reviewed

Noriaki Hamachi, Yukio Yasui, Koji Araki, Shunichiro Kittaka, Toshiro Sakakibara

AIP ADVANCES   6 ( 5 )   055707   2016.5

Novel Charge Ordering in the Trimer Iridium Oxide BaIrO3 Reviewed

Ichiro Terasaki, Shun Ito, Taichi Igarashi, Shinichiro Asai, Hiroki Taniguchi, Ryuji Okazaki, Yukio Yasui, Kensuke Kobayashi, Reiji Kumai, Hironori Nakao, Youichi Murakami

CRYSTALS   6 ( 3 )   27   2016.3

Possible observation of highly itinerant quantum magnetic monopoles in the frustrated pyrochlore Yb2Ti2O7 Reviewed

Y. Tokiwa, T. Yamashita, M. Udagawa, S. Kittaka, T. Sakakibara, D. Terazawa, Y. Shimoyama, T. Terashima, Y. Yasui, T. Shibauchi, Y. Matsuda

NATURE COMMUNICATIONS   7   10807   2016.2

Neutron Diffraction Study of 1D Quantum Spin System Li<SUB>2</SUB>ZrCuO<SUB>4</SUB> with Incommensurate Magnetic Structure Reviewed International journal

Yukio Yasui, Naoki Igawa, and Kazuhisa Kakurai

8   034012   2015.9

Effects of the Ir impurity on the thermodynamic and transport properties of Ba<SUB>4</SUB>Ru<SUB>3-x</SUB>Ir<SUB>x</SUB>O<SUB>10</SUB> Reviewed International journal

Taichi Igarashi, Ryuji Okazaki, Hiroki Taniguchi, Yukio Yasui, and Ichiro Terasaki

J. Phys. Soc. Jpn.   84   094601   2015.8

An origin of good electrical conduction in La<SUB>4</SUB>BaCu<SUB>5</SUB>O<SUB>13+δ</SUB> Reviewed International journal

Daiki Mori, Shinichiro Asai, Ichiro Terasaki, Ryuji Okazaki, Yukio Yasui, Outi Parkkima and Maarit Karppinen

J. Apl. Phys.   118 ( 3 )   035104   2015.7

First-order ferromagnetic transition of quantum spin ice system Yb<SUB>2</SUB>Ti<SUB>2</SUB>O<SUB>7</SUB> Reviewed International journal

Yukio Yasui, Noriaki Hamachi, Yohei Kono, Shunichiro Kittaka, Toshiro Sakakibara

SPIN   5 ( 2 )   1540002   2015.7

Anomalous magnetic order in the magnetoelectric oxide NdCrTiO5 revealed by impurity effects Reviewed

Shunsuke Kori, Takuma Okamura, Ryuji Okazaki, Ichiro Terasaki, Yukio Yasui

PHYSICAL REVIEW B   91 ( 14 )   144403-1 - 144403-6   2015.4

Ruthenium oxide as a thermoelectric material: unconventional thermoelectric properties of Li2RuO3 Reviewed

Ichiro Terasaki, Shuhei Abe, Yukio Yasui, Ryuji Okazaki, Hiroki Taniguchi

JOURNAL OF MATERIALS CHEMISTRY C   3 ( 40 )   10430 - 10435   2015

Unconventional magnetism in the layered oxide LaSrRhO4 Reviewed

Noriyasu Furuta, Shinichiro Asai, Taichi Igarashi, Ryuji Okazaki, Yukio Yasui, Ichiro Terasaki, Masami Ikeda, Takahito Fujita, Masayuki Hagiwara, Kensuke Kobayashi, Reiji Kumai, Hironori Nakao, Youichi Murakami

PHYSICAL REVIEW B   90 ( 14 )   144402-(1-7)   2014.10

Disorder Effect for an Orbital Order in Ca2RuO4 Revealed by Infrared Imaging Spectroscopy Reviewed

Ryuji Okazaki, Yuka Ikemoto, Taro Moriwaki, Fumihiko Nakamura, Takashi Suzuki, Yukio Yasui, Ichiro Terasaki

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   83 ( 8 )   084701-(1-5)   2014.8

Possible Existence of Two Charge-Ordered Phases in Pr1-xCaxMnO3 for 0.40 &lt;= x &lt;= 0.50 Reviewed

Partha Sarathi Mondal, Shinichiro Asai, Taichi Igarashi, Takahiro Suzuki, Ryuji Okazaki, Ichiro Terasaki, Yukio Yasui, Kensuke Kobayashi, Reiji Kumai, Hironori Nakao, Youichi Murakami

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   83 ( 6 )   064709-(1-6)   2014.6

First-order magnetic transition in Yb2Ti2O7 Reviewed

E. Lhotel, S. R. Giblin, M. R. Lees, G. Balakrishnan, L. J. Chang, Y. Yasui

PHYSICAL REVIEW B   89 ( 22 )   224419-(1-7)   2014.6

Optical Study of a Novel Phase Transition from Dimer-Mott to Charge-Order Insulator Reviewed

Ryuji Okazaki, Yukio Yasui, Ichiro Terasaki, Yuka Ikemoto, Taro Moriwaki, Takahisa Shikama, Kazuyuki Takahashi, Hatsumi Mori, Hideki Nakaya, and Takahiko Sasaki

JPS Conf. Proc.   3   013010-(1-6)   2014.6

Weak Ferromagnetic Ordering Disordered by Rh<SUP>3</SUP>+ Ions for LaCo<SUB>0.8</SUB>Rh<SUB>0.2</SUB>O<SUB>3</SUB> Reviewed International journal

Shinichiro Asai, Ryuji Okazaki, Ichiro Terasaki, Yukio Yasui, Naoki Igawa, and Kazuhisa Kakurai

JPS Conf. Proc.   3   014034-(1-6)   2014.6

First-order magnetic transition in Yb2Ti2O7 Reviewed

E. Lhotel, S. R. Giblin, M. R. Lees, G. Balakrishnan, L. J. Chang, Y. Yasui

PHYSICAL REVIEW B   89 ( 22 )   224419-1 - 224419-7   2014.6

Low temperature Magnetic Properties of Frustrated Quantum Spin Chain System Rb<SUB>2</SUB>Cu<SUB>2</SUB>Mo<SUB>3</SUB>O<SUB>12</SUB> Reviewed International journal

Yukio Yasui, Ryuji Okazaki, Ichiro Terasaki, Masashi Hase, Masato Hagihala, Takatsugu Masuda, and Toshiro Sakakibara

JPS Conf. Proc.   3   014014-(1-6)   2014.6

Magnetic Properties of the Quasi-1D Frustrated Magnet Li<SUB>2</SUB>ZrCuO<SUB>4</SUB> Reviewed International journal

T. Fujita, M. Hagiwara, M. Inada, Y. Yasui, and I. Terasaki

JPS Conf. Proc.   3   014028-(1-6)   2014.6

Static magnetic moments revealed by muon spin relaxation and thermodynamic measurements in quantum spin ice Yb<SUB>2</SUB>Ti<SUB>2</SUB>O<SUB>7</SUB> Reviewed International journal

Lieh-Jeng Chang, Martin R. Lees, Isao Watanabe, Adrian D. Hillier, Yukio Yasui, and Shigeki Onoda

Phys. Rev. B   80 ( 18 )   184416 (1-5)   2014.5

Magnetic and dielectric properties of one-dimensional array of S=1/2 linear trimer system Na2Cu3Ge4O12 Reviewed

Yukio Yasui, Yuji Kawamura, Yoshiaki Kobayashi, Masatoshi Sato

JOURNAL OF APPLIED PHYSICS   115 ( 17 )   17E125   2014.5

Novel Transition from Dimer Mott to Charge Order Phase in a Two-Dimensional Quarter-Filled Organic System Reviewed

R. Okazaki, Y. Ikemoto, T. Moriwaki, T. Shikama, K. Takahashi, H. Mori, H. Nakaya, T. Sasaki, Y. Yasui, and I. Terasaki

Phys. Rev. Lett.   111   217801 (1-5)   2013.11

Spin State of Co3+ in LaCo1-xRhxO3 Investigated by Structural Phenomena Reviewed

Shinichiro Asai, Ryuji Okazaki, Ichiro Terasaki, Yukio Yasui, Wataru Kobayashi, Akiko Nakao, Kensuke Kobayashi, Reiji Kumai, Hironori Nakao, Youichi Murakami, Naoki Igawa, Akinori Hoshikawa, Toru Ishigaki, Outi Parkkima, Maarit Karppinen, Hisao Yamauchi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   82 ( 11 )   114606 (1-6)   2013.11

An origin of the energy gap in the narrow-gap semiconductor FeSb<SUB>2</SUB> revealed by high-pressure magnetotransport measurements Reviewed International journal

H. Takahashi, R. Okazaki, I. Terasaki, and Y. Yasui

Phys. Rev. B   88 ( 16 )   165205 (1-5)   2013.10

X-ray crystal structure analysis and Ru valence of Ba<inf>4</inf>Ru <inf>3</inf>O<inf>10</inf> single crystals Reviewed

Taichi Igarashi, Yoshio Nogami, Yannick Klein, Gwenaelle Rousse, Ryuji Okazaki, Hiroki Taniguchi, Yukio Yasui, Ichiro Terasaki

Journal of the Physical Society of Japan   82 ( 10 )   104603 (1-6)   2013.10

Current-Induced Gap Suppression in the Mott Insulator Ca2RuO4 Reviewed

Ryuji Okazaki, Yasuo Nishina, Yukio Yasui, Fumihiko Nakamura, Takashi Suzuki, Ichiro Terasaki

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   82 ( 10 )   103702 (1-5)   2013.10

On the superconducting symmetry of Fe-based systems - Impurity effect studies and neutron scattering measurements Reviewed

Masatoshi Sato, Yoshiaki Kobayashi, Takayuki Kawamata, Yukio Yasui, Kazunori Suzuki, M. Itoh, Ryoichi Kajimoto, Kazuhiko Ikeuchi, M. Arai, Phillipe Bourges

JOURNAL OF THE KOREAN PHYSICAL SOCIETY   62 ( 12 )   1726 - 1733   2013.7

Magnetic field induced ferroelectric transition of quasi one-dimensional frustrated quantum spin chain system Rb2Cu2Mo3O12 Reviewed

Yukio Yasui, Yudai Yanagisawa, Ryuji Okazaki, Ichiro Terasaki, Yasuhiro Yamaguchi, Tsuyoshi Kimura

JOURNAL OF APPLIED PHYSICS   113 ( 17 )   17D910 (1-3)   2013.5

フラストレートした１次元量子スピン磁性体で誘起される強誘電転移と新奇量子磁気状態 Reviewed

日本中性子科学会誌   23 ( 1 )   44-49   2013.2

Dielectric anomaly in the quasi-one-dimensional frustrated spin-1/2 system Rb-2(Cu1-xMx)(2)Mo3O12 (M = Ni and Zn) Reviewed

Yukio Yasui, Yudai Yanagisawa, Ryuji Okazaki, Ichiro Terasaki

PHYSICAL REVIEW B   87 ( 5 )   054411 (1-5)   2013.2

Phonon-Seebeck Effect in ZnO Reviewed

Ryuji Okazaki, Ayaka Horikawa, Yukio Yasui, and Ichiro Terasaki.

J. Phys. Soc. Jpn.   81 ( 11 )   114722 (1-5)   2012.11

Phonon-Seebeck Effect in ZnO Reviewed

Ryuji Okazaki, Ayaka Horikawa, Yukio Yasui, Ichiro Terasaki

J. Phys. Soc. Jpn.   81 ( 11 )   114722 (1-5)   2012.11

High-temperature thermoelectric properties of the double-perovskite ruthenium oxide (Sr1-xLax)(2)ErRuO6 Reviewed

Ryohei Takahashi, Ryuji Okazaki, Yukio Yasui, Ichiro Terasaki, Takaaki Sudayama, Hironori Nakao, Yuichi Yamasaki, Jun Okamoto, Youichi Murakami, Yoshinori Kitajima

JOURNAL OF APPLIED PHYSICS   112 ( 7 )   073714 (1-5)   2012.10

Higgs transition from a magnetic Coulomb liquid to a ferromagnet in Yb2Ti2O7 Reviewed

Lieh-Jeng Chang, Shigeki Onoda, Yixi Su, Ying-Jer Kao, Ku-Ding Tsuei, Yukio Yasui, Kazuhisa Kakurai, Martin Richard Lees

NATURE COMMUNICATIONS   3   992 (1-7)   2012.8

Ga3+ substitution effects in the weak ferromagnetic oxide LaCo0.8Rh0.2O3 Reviewed

Shinichiro Asai, Noriyasu Furuta, Ryuji Okazaki, Yukio Yasui, Ichiro Terasaki

PHYSICAL REVIEW B   86 ( 1 )   014421 (1-5)   2012.7

Study of magnetic excitation spectra of several Fe-pnictide systems Reviewed

M. Sato, T. Kawamata, Y. Kobayashi, Y. Yasui, T. Iida, K. Suzuki, M. Itoh, T. Moyoshi, K. Motoya, R. Kajimoto, M. Nakamura, Y. Inamura, M. Arai

26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5   400   022105 (1-4)   2012

Weak Ferromagnetism in LaCo1-xRhxO3: Anomalous Magnetism Emerging between Two Nonmagnetic End Phases Reviewed

Shinichiro Asai, Noriyasu Furuta, Yukio Yasui, Ichiro Terasaki

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( 10 )   104705(1-5)   2011.10

Magnetic Excitation Spectra of Superconducting Ca-Fe-Pt-As System Reviewed

Masatoshi Sato, Takayuki Kawamata, Yoshiaki Kobayashi, Yukio Yasui, Takefumi Iida, Kazunori Suzuki, Masayuki Itoh, Taketo Moyoshi, Kiyoichiro Motoya, Ryoichi Kajimoto, Mitsutaka Nakamura, Yasuhiro Inamura, Masatoshi Arai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( 9 )   093709 (1-4)   2011.9

Optical study of the electronic structure and correlation effects in K0.49RhO2 Reviewed

R. Okazaki, Y. Nishina, Y. Yasui, S. Shibasaki, I. Terasaki

PHYSICAL REVIEW B   84 ( 7 )   075110 (1-4)   2011.8

Neutron Scattering Study of Magnetic Excitation Spectra of Ba(Fe0.9Co0.1)(2)As-2 Reviewed

Shunichi Tatematsu, Yukio Yasui, Taketo Moyoshi, Kiyoichiro Motoya, Kazuhisa Kakurai, Masatoshi Sato

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( 7 )   073703(1-4)   2011.7

Low-temperature magnetotransport of the narrow-gap semiconductor FeSb<SUB>2</SUB> Reviewed International journal

H. Takahashi, R. Okazaki, Y. Yasui, and I. Terasaki

Phys. Rev. B   84 ( 5 )   205215 (1-5)   2011.5

Effects of ppm-Level Imperfection on the Transport Properties of FeSb2 Single Crystals Reviewed

Hidefumi Takahashi, Yukio Yasui, Ichiro Terasaki, Masatoshi Sato

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80 ( 5 )   054708(1-4)   2011.5

Multiferroic behavior in the quasi one-dimensional frustrated spin-1/2 system PbCuSO<SUB>4</SUB>(OH)<SUB>2</SUB> with CuO<SUB>2</SUB> ribbon chains Reviewed International journal

Y. Yasui, M. Sato, I. Terasaki

J. Phys. Soc. Jpn   80 ( 3 )   033707(1-4)   2011.3

On the Magnetic Excitation Spectra of Ba(Fe0.9Co0.1)(2)As-2 in the Superconducting State Reviewed

M. Sato, S. Tatematsu, Y. Yasui, Y. Kobayashi, T. Moyoshi, K. Motoya, K. Kakurai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   80   SB002 (1-4)   2011.1

Relationship between ferroelectricity and magnetic structure of PbCuSO(4)(OH)(2) with CuO(2) ribbon chains Reviewed

Yukio Yasui, Yudai Yanagisawa, Masatoshi Sato, Ichiro Terasaki

INTERNATIONAL CONFERENCE ON FRUSTRATION IN CONDENSED MATTER (ICFCM)   320   012087(1-6)   2011

Magnetic excitations of superconducting LaFeAsO0.89F0.11 Reviewed

T. Moyoshi, S. C. Lee, S. Tatematsu, Y. Yasui, Y. Kobayashi, M. Sato, K. Kakurai

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS   470   S470 - S471   2010.12

High Temperature Multiferroic State in RBaCuFeO<SUB>5</SUB> (R=Y, Lu and Tm) Reviewed International journal

Y. Kawamura, T. Kai, E. Satomi, Y. Yasui, Y. Kobayashi, M. Sato, and K. Kakurai

J. Phys. Soc. Jpn   79 ( 7 )   073705-(1-4)   2010.7

Superconducting transition temperature and the thickness of CoO2 planes of NaxCoO2 center dot yH(2)O Reviewed

Taketo Moyoshi, Yoshiaki Kobayashi, Yukio Yasui, Masatoshi Sato, Kazuhisa Kakurai

SOLID STATE SCIENCES   12 ( 5 )   656 - 659   2010.5

Relationship between magnetic structure and ferroelectricity of systems with CuO2 ribbon chains Reviewed

Sato Masatoshi, Yasui Yukio, Kobayashi Yoshiaki, Sato Kenji, Naito Yutaka, Tarui Yasuko, Kawamura Yuji

SOLID STATE SCIENCES   12 ( 5 )   670 - 675   2010.5

Studies of Multiferroic System of LiCu2O2: II. Magnetic Structures of Two Ordered Phases with Incommensurate Modulations Reviewed

Yoshiaki Kobayashi, Kenji Sato, Yukio Yasui, Taketo Moyoshi, Masatoshi Sato, Kazuhisa Kakurai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   78 ( 8 )   084721-(1-5)   2009.8

Studies of Multiferroic System LiCu2O2: I. Sample Characterization and Relationship between Magnetic Properties and Multiferroic Nature Reviewed

Yukio Yasui, Kenji Sato, Yoshiaki Kobayashi, Masatoshi Sato

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   78 ( 8 )   084720-(1-5)   2009.8

Magnetic Excitations of Spin-Gap System Na3Cu2SbO6 with Distorted Honeycomb Structure Reviewed

Yoko Miura, Yukio Yasui, Taketo Moyoshi, Masatoshi Sato, Kazuhisa Kakurai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   77 ( 10 )   104709-(1-4)   2008.10

Crystal structure and magnetic properties of CoZn(TeO3)Br-2 Reviewed

Takafumi Kashi, Yukio Yasui, Taketo Moyoshi, Masatoshi Sato, Kazuhisa Kakurai, Satoshi Iikubo, Naoki Igawa

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   77 ( 8 )   084707-(1-5)   2008.8

Magnetic Excitations of Na<SUB>x</SUB>CoO<SUB>2</SUB>.yD<SUB>2</SUB>O -Neutron Scattering- Reviewed

T. Moyoshi, Y. Yasui, Y. Kobayashi, M. Sato, K. Kakurai

J. Phys. Soc. Jpn.   77 ( 7 )   073709-(1-4)   2008.7

Magnetic Excitations of Na<SUB>x</SUB>CoO<SUB>2</SUB>.yD<SUB>2</SUB>O -Neutron Scattering- Reviewed International journal

T. Moyoshi, Y. Yasui, Y. Kobayashi, M. Sato and K. Kakurai

J. Phys. Soc. Jpn.   77 ( 7 )   073709-(1-4)   2008.7

Relationship between magnetic structure and ferroelectricity of LiVCuO4 Reviewed

Yukio Yasui, Yutaka Naito, Kenji Sato, Taketo Moyoshi, Masatosbi Sato, Kazuhisa Kakurai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   77 ( 2 )   023712-(1-4)   2008.2

Successive phase transitions of LuBaCo4O7 with kagome and triangular lattices Reviewed

Minoru Soda, Taketo Moyoshi, Yukio Yasui, Masatoshi Sato, Kazuhisa Kakurai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   76 ( 8 )   084701-(1-6)   2007.8

Magnetic Structure of Co<SUB>2</SUB>TeO<SUB>3</SUB>Cl<SUB>2</SUB> Reviewed International journal

T. Kashi, Y. Yasui, T. Moyoshi, M. Sato, N. Igawa and K. Kakurai

J. Phys. Soc. Jpn   76 ( 8 )   084713-(1-5)   2007.8

Magnetic Behavior of spin-1/2 frustrated system Hg2Cu2F6S Reviewed

Shohei Kawabata, Yukio Yasui, Yoshiaki Kobayashi, Masatoshi Sato

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   76 ( 8 )   084705-(1-5)   2007.8

Magnetic structures of Co(2)Teo(3)Cl(2) Reviewed

Takafumi Kashi, Yukio Yasui, Taketo Moyoshi, Masatoshi Sato, Naoki Igawa, Kazuhisa Kakurai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   76 ( 8 )   084713-(1-5)   2007.8

Observation of the In-Plane Ordering of D<SUB>2</SUB>O Molecules on Na<SUB>x</SUB>CoO<SUB>2</SUB>.yD<SUB>2</SUB>O by Neutron Diffraction Reviewed International journal

T. Moyoshi, Y. Yasui, M. Soda, Y. Kobayashi, M. Sato and K. Kakurai

J. Mag. Mag. Mat   310 ( 2 )   654-656 - 656   2007.3

Studies on the anomalous Hall effect of Nd2Mo2O7 - Test of the chirality mechanism Reviewed

Y. Yasui, T. Kageyama, T. Moyoshi, M. Soda, M. Sato, K. Kakurai

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   310 ( 2 )   E544 - E546   2007.3

Successive Magnetic Transition of the Kagomé Staircase Compound Co<SUB>3</SUB>V<SUB>2</SUB>O<SUB>8</SUB> Studied in Various Magnetic Fields Reviewed International journal

Y. Yasui, Y. Kobayashi, M. Soda, T. Moyoshi, M. Sato, N. Igawa and K. Kakurai

J. Phys. Soc. Jpn   76 ( 3 )   034706-(1-8)   2007.3

Studies of magnetic behavior of spin-1/2 frustrated system Hg2Cu2F6S Reviewed

S. Kawabata, Y. Yasui, Y. Kobayashi, M. Sato, N. Igawa, K. Kakurai

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   310 ( 2 )   1295 - 1296   2007.3

Magnetic and thermal properties of Co3V2O8 and Ni3V2O8 Reviewed

Yusuke Kobayashi, Yukio Yasui, Masatoshi Sato

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   310 ( 2 )   1160 - 1161   2007.3

Magnetic measurements and neutron studies on YBaCo4O7 and LuBaCo4O7 Reviewed

M. Soda, Y. Yasu, T. Moyoshi, M. Sato, N. Igawa, K. Kakurai

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   310 ( 2 )   E441 - E442   2007.3

New-type phase transition of Li2RuO3 with honeycomb structure Reviewed

Yoko Miura, Yukio Yasui, Masatoshi Sato, Naoki Igawa, Kazuhisa Kakurai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   76 ( 3 )   033705-(1-4)   2007.3

Ferroelectric transition induced by the incommensurate magnetic ordering in LiCuVO4 Reviewed

Yutaka Naito, Kenji Sato, Yukio Yasui, Yusuke Kobayashi, Yoshiaki Kobayashi, Masatoshi Sato

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   76 ( 2 )   023708-(1-3)   2007.2

Existence of the Co3+ Low Spin State in TbBaCo<SUB>2</SUB>O<SUB>5.5</SUB> Reviewed International journal

M. Soda, Y. Yasui, Y. Kobayashi, T. Fujita, M. Sato and K. Kakurai

J. Phys. Soc. Jpn   75 ( 10 )   104708-(1-7)   2006.10

Studies of the Anomalous Hall Effect and Magnetic Structure of Nd<SUB>2</SUB>Mo<SUB>2</SUB>O<SUB>7</SUB> -Test of the Chirality Mechanism- Reviewed International journal

Y. Yasui, T. Kageyama, T. Moyoshi, M. Soda, M. Sato and K. Kakurai

J. Phys. Soc. Jpn   75 ( 8 )   084711-(1-11)   2006.8

Search for magnetic excitation spectra of NaxCoO2 center dot yD(2)O - Neutron scattering Reviewed

Taketo Moyoshi, Yukio Yasui, Minoru Soda, Yoshiaki Kobayashi, Masatoshi Sato, Kazuhisa Kakurai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   75 ( 7 )   074705-(1-6)   2006.7

Search for Magnetic Excitation Spectra of Na<SUB>x</SUB>CoO<SUB>2</SUB>.yD<SUB>2</SUB>O -Neutron Scattering- Reviewed

T. Moyoshi, Y. Yasui, M. Soda, Y. Kobayashi, M. Sato and K. Kakurai

J. Phys. Soc. Jpn   75 ( 6 )   074705-(1-6)   2006.6

Magnetic structure of YBaCo4O7 with kagome and triangular lattices Reviewed

Minoru Soda, Yukio Yasui, Taketo Moyoshi, Mashi Sato sato, Naoki Igawa, Kazuhisa Kakurai

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   75 ( 5 )   054707-(1-6)   2006.5

Magnetic Properties of RCrTiO5 (R=Rare Earth Elements) International conference

Yukio Yasui, Takuma Miyamoto, Shunsuke Kori, Ichiro Terasaki, Daichi Yoshizawa, Mitsuru Akaki, Masayuki Hagiwara, Takeshi Matsukawa, Yukihiko Yoshida, Akinori Hoshikawa, Toru Ishigaki, and Naoki Igawa

SCES2017  2017.7 

フラストレートした一次元量子スピン系Cs2Cu2Mo3O12の磁気構造

安井幸夫, 藤村明央, 大森喜由, 井川直樹, 松川健, 吉田幸彦, 星川晃範, 石垣徹

日本中性子科学会第16回年会  2016.12  日本中性子科学会

フラストレートした一次元量子スピン系(Rb,Cs)2Cu2Mo3O12の多彩な磁気特性と誘電特性 Invited

日本物理学会2016年秋期大会  2016.9 

Magnetic Structure of Li<SUB>2</SUB>ZrCuO<SUB>4</SUB> with Quasi-one-dimensional <I>J</I><SUB>1</SUB>-<I>J</I><SUB>2</SUB> Magnet International conference

Yukio Yasui, Naoki Igawa, and Kazuhisa Kakurai

13th Joint MMM-Intermag Conference  2016.1 

フラストレート・スピン1/2鎖物質における螺旋秩序状態vsスピンギャップ状態 Invited

日本物理学会2014年秋期大会  2014.9  日本物理学会

量子スピンアイス系Yb<SUB>2</SUB>Ti<SUB>2</SUB>O<SUB>7</SUB>の実験的研究 Invited

日本物理学会2013年秋季大会  2013.11  日本物理学会

Low temperature Magnetic Properties of Frustrated Quantum Spin Chain System Rb<SUB>2</SUB>Cu<SUB>2</SUB>Mo<SUB>3</SUB>O<SUB>12</SUB>

Y. Yasui, R. Okazaki, I. Terasaki, M. Hase, M. Hagihala, T. Masuda, and T. Sakakibara

The International Correlated Electron Systems (SCES2013)  2013.8 

Magnetic Behavior and Crystal Structure of One-Dimensional Quantum Spin System Li<SUB>2</SUB>ZrCuO<SUB>4</SUB> International conference

Yukio Yasui, Naoki Igawa, Kazuhisa Kakurai, Akinori Hoshikawa, and Toru Ishigaki

International Conference on Neutron Scattering (ICNS2013)  2013.7 

量子スピンアイス系Yb<SUB>2</SUB>Ti<SUB>2</SUB>O<SUB>7</SUB>の新奇な磁気転移

安井幸夫, 小野田繁樹, 橘高俊一郎, 榊原俊郎

日本物理学会第68回年次大会  2013.3  日本物理学会

Magnetic Field Induced Ferroelectric Transition of Quasi One-Dimensional Frustrated Quantum Spin Chain System Rb<SUB>2</SUB>Cu<SUB>2</SUB>Mo<SUB>3</SUB>O<SUB>12</SUB> International conference

Yukio Yasui, Yudai Yanagisawa, Ryuji Okazaki, Ichiro Terasaki, Yasuhiro Yamaguchi, and Tsuyoshi Kimura

12th Joint MMM/Intermag Conference  2013.1  AIP and The IEEE Magnetics Society

CuO<SUB>2</SUB>リボン系Rb<SUB>2</SUB>Cu<SUB>2</SUB>Mo<SUB>3</SUB>O<SUB>12</SUB>の中性子磁気非弾性散乱

安井幸夫, 寺崎一郎, 長谷正司, 萩原雅人, 左右田稔, 益田隆嗣, 富安啓輔, 河村聖子, 中島健次, 加倉井和久

日本中性子学会 第12回年会  2012.12  日本中性子学会

CuO<SUB>2</SUB>リボン鎖を持つRb<SUB>2</SUB>Cu<SUB>2</SUB>Mo<SUB>3</SUB>O<SUB>12</SUB>の中性子磁気非弾性散乱

安井幸夫, 寺崎一郎, 長谷正司, 萩原雅人, 左右田稔, 益田隆嗣, 富安啓輔, 河村聖子, 中島健次, 加倉井和久

第4回J-PARC/MLFシンポジウム  2012.10  J-PARC/MLF

CuO<SUB>2</SUB>リボン鎖を持つRb<SUB>2</SUB>Cu<SUB>2</SUB>Mo<SUB>3</SUB>O<SUB>12</SUB>の特異な基底状態と磁場効果

安井幸夫, 岡崎竜二, 寺崎一郎, 長谷正司, 萩原雅人, 益田隆嗣, 榊原俊郎

日本物理学会2012年秋季大会  2012.9  日本物理学会

Magnetic Field Induced Ferroelectric Transition of Quantum Spin Chain System Rb<SUB>2</SUB>Cu<SUB>2</SUB>Mo<SUB>3</SUB>O<SUB>12</SUB>

Y. Yasui, Y. Yanagisawa, R. Okazaki, I. Terasaki, Y. Yamaguchi, and T. Kimura

American Physics Society March meeting 2012  2012.2  American Physics Society

Magnetic Structures and Dielectric Properties of Quasi One-Dimensional Frustrated Quantum Spin Systems With CuO<SUB>2</SUB> Ribbon Chains

Y. Yasui, Y. Yanagisawa, R. Okazaki, I. Terasaki, Y. Yamaguchi, and T. Kimura

1st Asia-Oceania Conference on Neutron Scattering  2011.11 

フラストレートしたスピン1/2の1次元鎖をもつRb<SUB>2</SUB>Cu<SUB>2</SUB>Mo<SUB>3</SUB>O<SUB>12</SUB>の磁場誘起強誘電転移

安井幸夫, 柳沢雄大, 岡崎竜二, 寺崎一郎, 山口泰弘, 木村剛

東北大学金研ワークショップ「電子自由度による強誘電体最前線」  2011.11  東北大学金属材料研究所

Nd<SUB>2</SUB>Mo<SUB>2</SUB>O<SUB>7</SUB>の中性子散乱と異常ホール効果

Workshop:CROSSROAD of Users and J-PARC 第1回「J-PARCにおける強相関系や機能材料研究の将来」  2011.10 

Multiferroic Behavior of Quasi One-Dimensional Frustrated Quantum Spin System with CuO<SUB>2</SUB> Ribbon Chains

Y. Yasui, Y. Yanagisawa, R. Okazaki, I. Terasaki, Y. Yamaguchi, and T. Kimura

International Discussion Meeting on Thermoelectrics and Related Functional Materials  2011.6 

Anomalous Dielectric Properties of Quasi-1D frustrated spin-1/2 systems with CuO<SUB>2</SUB> ribbon chains

Y. Yasui, Y. Yanagisawa, R. Okazaki, I. Terasaki, Y. Yamaguchi, and T. Kimura

Joint meeting the MEXT Japanese Network on ¨Novel State of Matter Induced by Frustration¨ and the Quantum Materials Program of the Canadian Institute for Advanced Research  2011.5 

Magnetic Excitation Spectra of Ba(Fe<SUB>0.9</SUB>Co<SUB>0.1</SUB>)<SUB>2</SUB>As<SUB>2</SUB> (<I>T</I><SUB>c</SUB>~23K),

Y. Yasui, S. Tatematsu, I. Terasaki, T. Moyoshi, K. Motoya, K. Kakurai and M. Sato

International Workshop on Novel Superconductors and Super Materials 2011 (NS22011)  2011.3 

鉄系超伝導体Ba(Fe<SUB>0.9</SUB>Co<SUB>0.1</SUB>)<SUB>2</SUB>As<SUB>2</SUB>単結晶の中性子非弾性散乱

安井幸夫, 立松峻一, 浅井晋一郎, 寺崎一郎, 加倉井和久, 茂吉武人, 元屋清一郎, 佐藤正俊

JRR-3改造20周年記念シンポジウム －研究用原子炉JRR-3の利用の成果と今後の展開－  2011.2 

Relationship between ferroelectricity and magnetic structure of PbCuSO<SUB>4</SUB>(OH)<SUB>2</SUB> with CuO<SUB>2</SUB> ribbon chains

Y. Yasui, Y. Yanagisawa, M. Sato, and I. Terasaki

International Conference on Frustration in Condensed Matter (ICFCM) 2011, Sendai International Center  2011.1 

CuO<SUB>2</SUB>リボン鎖をもつPbCuSO<SUB>4</SUB>(OH)<SUB>2</SUB>の磁気構造と誘電特性

安井幸夫, 柳沢雄大, 佐藤正俊, 加倉井和久, 寺崎一郎

日本中性子科学会 第10回年会  2010.12  日本中性子科学会

CuO<SUB>2</SUB>リボン鎖をもつPbCuSO<SUB>4</SUB>(OH)<SUB>2</SUB>単結晶の磁性と誘電特性

安井幸夫, 柳沢雄大, 佐藤正俊, 寺崎一郎

日本物理学会2010年秋季大会  2010.9  日本物理学会

マルチフェロイック物質YBaCuFeO<SUB>5</SUB>の磁気構造

安井幸夫, 川村雄司, 甲斐崇宏, 久田智之, 立松峻一, 佐藤正俊, 井川直樹, 加倉井和久

日本中性子科学会 第9回年会  2009.12  日本中性子科学会

YBaCuFeO<SUB>5</SUB>の磁気構造

安井幸夫, 川村雄司, 甲斐崇宏, 久田智之, 立松峻一, 佐藤正俊, 井川直樹, 加倉井和久

日本物理学会2009年秋季大会  2009.9  日本物理学会

LiCu<SUB>2</SUB>O<SUB>2</SUB>の磁気構造とマルチフェロイック特性 –中性子散乱–

安井幸夫, 佐藤健二, 茂吉武人, 小林義明, 佐藤正俊, 加倉井和久

日本物理学会第64回年次大会  2009.3  日本物理学会

CuO<SUB>2</SUB>リボン系のマルチフェロイック

安井幸夫, 内藤豊, 佐藤健二, 川村雄司, 茂吉武人, 佐藤正俊, 加倉井和久

日本中性子科学会第8回年会  2008.12  日本中性子科学会

Relationship between magnetic structure and ferroelectricity of LiVCuO<SUB>4</SUB> with the CuO<SUB>2</SUB> ribbon chains

Y. Yasui, Y. Naito, K. Sato, T. Moyoshi, M. Sato, and K. Kakurai

The 2rd International Symposium on Anomalous Quantum Materials (ISAQM2008) and the 7th Asia-Pacific Workshop  2008.11 

CuO<SUB>2</SUB>リボン鎖を持つPbCuSO<SUB>4</SUB>(OH)<SUB>2</SUB>の磁性と誘電特性

安井幸夫, 川村雄司, 佐藤正俊

日本物理学会2008年秋季大会  2008.8  日本物理学会

Nd<SUB>2</SUB>Mo<SUB>2</SUB>O<SUB>7</SUB>の中性子散乱と異常ホール効果

日本物理学会第63回年次大会  2008.3  日本物理学会

LiCu<SUB>2</SUB>O<SUB>2</SUB>の磁気構造

安井幸夫,長谷川徹,佐藤健二,茂吉武人,佐藤正俊,加倉井和久

日本物理学会第63回年次大会  2008.3  日本物理学会

Relationship between Magnetic structure and Ferroelectricity of LiVCuO<SUB>4</SUB>

Y. Yasui and M. Sato

Nagoya International Symposium -Science of Molecular Assembly and Biomolecular Systems-  2007.11 

<I>S</I>=1/2スピンのマルチフェロイック物質LiVCuO<SUB>4</SUB>の磁気構造

安井幸夫,内藤豊,佐藤健二,茂吉武人,佐藤正俊,加倉井和久

日本中性子科学会 第7回年会  2007.11  日本中性子科学会

<I>S</I>=1/2マルチフェロイックLiVCuO<SUB>4</SUB>の磁場中の磁気構造

安井幸夫,内藤豊,佐藤健二,茂吉武人,佐藤正俊,加倉井和久

日本物理学会第62回年次大会  2007.9  日本物理学会

マルチフェロイックLiCuVO<SUB>4</SUB>の磁気構造

安井幸夫, 佐藤健二, 内藤豊, 茂吉武人, 佐藤正俊, 加倉井和久

日本物理学会2007年春期大会  2007.3  日本物理学会

階段状カゴメ格子系Co<SUB>3</SUB>V<SUB>2</SUB>O<SUB>8</SUB>の逐次磁気相転移と<I>H</I>-<I>T</I>相図

安井幸夫, 小林祐介, 茂吉武人, 左右田稔, 佐藤正俊, 井川直樹, 加倉井和久

日本中性子科学会第６回年会  2006.12  日本中性子科学会

Nd<SUB>2</SUB>Mo<SUB>2</SUB>O<SUB>7</SUB>の異常ホール効果と磁気構造 ―chirality modelは適用できるか？－

安井幸夫, 影山健友, 佐藤陽, 茂吉武人, 左右田稔, 佐藤正俊, 加倉井和久

日本中性子科学会第６回年会  2006.12  日本中性子科学会

階段状カゴメ格子系Co<SUB>3</SUB>V<SUB>2</SUB>O<SUB>8</SUB>の磁気構造

安井幸夫, 小林祐介, 茂吉武人, 左右田稔, 佐藤正俊, 井川直樹, 加倉井和久

日本物理学会2006年秋季大会  2006.9  日本物理学会

Studies on the Anomalous Hall Effect of Nd<SUB>2</SUB>Mo<SUB>2</SUB>O<SUB>7</SUB> -Test of the Chirality Mechanism-

Y. Yasui, T. Kageyama, T. Moyoshi, M. Soda, M. Sato and K. Kakurai

International Conference on Magnetism (ICM2006)  2006.8 

Can the Chirality Mechanism be applied to the Anomalous Hall Effect of Nd<SUB>2</SUB>Mo<SUB>2</SUB>O<SUB>7</SUB>

Y. Yasui, T. Kageyama and M. Sato

The International Symposium on Anomalous Quantum Materials 2006 and The 5-th Asia-Pacific Workshop  2006.6 

量子スピンが引き起こすマルチフェロイック相の新奇物性の探索

2010.4 - 2012.3

日本学術振興会  特定領域研究 

フラストレート系の磁気及び結晶構造の中性子散乱研究

2010.4 - 2012.3

非自明な磁気構造により誘起された強誘電性

2009

磁気フラストレートした量子スピン系の新奇な量子状態

2009

ハニカム格子化合物の特異な磁性－中性子散乱－

2008.4 - 2011.3

日本学術振興会  基盤研究 (C) 

パイロクロア化合物の特異な磁気・誘電特性

2007

スピン１／２パイロクロア格子化合物の磁気フラストレーション

2006.4 - 2008.3

日本学術振興会  基盤研究 (C) 

分野横断型研究

物理学の最前線

基礎力学１

基礎物理学実験２

数理物理学特論

基礎力学2

基礎物理学実験１

物性物理学特論B

基礎力学１

量子物理学特論B

基礎物理学実験１

基礎力学2

基礎物理学実験２

2016年度 第5回 大人のための科学実験講座

Role(s)： Lecturer

川崎市青少年科学館  川崎市青少年科学館  2017.1

2015年度 第5回 大人のための科学実験講座

Role(s)： Lecturer

川崎市青少年科学館  川崎市青少年科学館  2016.1

2014年度 第1回 大人のための科学実験講座

Role(s)： Lecturer

川崎市青少年科学館  川崎市青少年科学館  2015.1